BeamParticle Intent Analysis via Microsoft Luis

nlp_microsoft_luis.erl.fun

#!erlang
%% @doc Intent Analysis via Microsoft Luis
%%
%% run nlp_microsoft_luis(<<"I want to travel to Europe. Can you give me possible locations?">>)
%%
fun(Msg) ->
    %% The json configuration must be set for this function (TBD)
    Config = beamparticle_dynamic:get_config(),
    Endpoint = erlang:binary_to_list(maps:get(<<"endpoint">>, Config)),
    Key = erlang:binary_to_list(maps:get(<<"key">>, Config)),
    BaseUrl = "https://westus.api.cognitive.microsoft.com/luis/v2.0/apps/" ++
              Endpoint ++
              "?subscription-key=" ++
              Key ++
              "&spellCheck=true&verbose=true&timezoneOffset=5.5&q=",
    EscapedUrl = BaseUrl ++ beamparticle_urlutils:escape_uri(Msg),
    case httpc:request(get, {EscapedUrl, []}, [], [{body_format, binary}]) of
        {ok, {{_, 200, _}, _Headers, Body}} ->
            {proplists, [{<<"json">>, jiffy:decode(Body, [return_maps])}]};
        Resp ->
            {error, Resp}
    end
end.